How to really loop over filenames with spaces in

 Don't parse the output of "ls".

Instead:

for file in *

do

  ...

done

(source)

Parse a Perl stack trace for ease of understanding

Problem:

A Perl stack track is difficult to parse with my inferior human brain; I want to align each line horizontally so that discrepancies jump out at me.

Solution:

This isn't the whole solution, but it goes some way towards it.

perl script.pl | grep -v ^eval | perl -plne'$len=300-length($_); $space=" "x$len; s/called at /${space}called at /'